Why are these picture-related apps blank?

Question

I've been wondering a lot about this when it happened which I was using Walli* app yet after I have changed my ROM, maybe the app gets blank no matter how I install it. But after a time, I've also realized that there is another app called Reface with the same problem in which I can't use them because they're blank like there is no connection to the Internet.


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Note: I'm using Cloudflare Family DNS on my router and Firewall settings such SPI and DOS protection.
My ROM: AOSP based 7.1.2 Android custom ROM


— Mohammed Mehdi TBER | Sources

Answer

The problem was solved by installing Exposed via recovery instead of Magisk


— Mohammed Mehdi TBER | Sources

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